#!/bin/bash

# Slackware build script for heroes

# Written by B. Watson (urchlay@slackware.uk)

# Licensed under the WTFPL. See http://www.wtfpl.net/txt/copying/ for details.

# Old game I recall playing ~15 years ago. I liked it better then.

# All-in-one build. No way am I having 5 builds for the data, sfx, etc
# source packages.

cd $(dirname $0) ; CWD=$(pwd)

PRGNAM=heroes
VERSION=${VERSION:-0.21}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}
PKGTYPE=${PKGTYPE:-tgz}

# The various components have their own separate version numbering.
# This thing hasn't been updated in 20 years so making these
# overrideable is probably pointless.
DATAVER=${DATAVER:-1.5}
SFXVER=${SFXVER:-1.0}
STRAXVER=${STRAXVER-1.0}
STRAXHQVER=${STRAXHQVER-1.0}

if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) ARCH=i586 ;;
    arm*) ARCH=arm ;;
       *) ARCH=$( uname -m ) ;;
  esac
fi

if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then
  echo "$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE"
  exit 0
fi

TMP=${TMP:-/tmp/SBo}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

if [ "$ARCH" = "i586" ]; then
  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
fi

set -e

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM-$VERSION
mkdir -p $PRGNAM-$VERSION
cd $PRGNAM-$VERSION
TOPDIR="$( pwd )"
PKGDOC=$PKG/usr/doc/$PRGNAM-$VERSION

# This is needed to avoid the build process creating files in /root
export HEROES_HOME_DIR=$TOPDIR

# build_one() gets called multiple times, with args:
# $1 - tarball name
# $2 - tarball version
# $3 - optional, patch to apply
build_one() {
  cd $TOPDIR
  tar xvf $CWD/$1-$2.tar.bz2
  cd $1-$2
  chown -R root:root .
  find -L .  -perm /111 -a \! -perm 755 -a -exec chmod 755 {} \+ -o \
          \! -perm /111 -a \! -perm 644 -a -exec chmod 644 {} \+

  [ "$3" != "" ] && patch -p1 < "$3"

  LDFLAGS="-lm" \
  CFLAGS="$SLKCFLAGS" \
  CXXFLAGS="$SLKCFLAGS" \
  ./configure \
    --prefix=/usr \
    --bindir=/usr/games \
    --libdir=/usr/lib${LIBDIRSUFFIX} \
    --sysconfdir=/etc \
    --localstatedir=/var \
    --mandir=/usr/man \
    --disable-static \
    --build=$ARCH-slackware-linux

  make install-strip DESTDIR=$PKG

  mkdir -p $PKGDOC/$1-$2
  for i in ANNOUNCE AUTHORS COPYING ChangeLog NEWS README THANKS; do
    [ -e "$i" ] && [ "$( stat -c "%s" $i )" -gt 2 ] && \
      cat $i > $PKGDOC/$1-$2/$i || true
  done
}

# The patch comes from Arch AUR. It fixes a couple of compile issues,
# and also removes the -1 -2 -3 -4 options, makes 4x stretch the
# default (so the window's big enough to *see* on a modern display),
# makes fullscreen the default, and replaces the -F option with a -W
# (windowed) option to turn off fullscreen. Note that the patched
# game requires at least a 1280x800 display to work at all.
build_one $PRGNAM $VERSION $CWD/$PRGNAM-$VERSION.patch

# The rest of this stuff doesn't need patching.
build_one $PRGNAM-data $DATAVER
build_one $PRGNAM-sound-effects $SFXVER
build_one $PRGNAM-sound-tracks $STRAXVER
build_one $PRGNAM-hq-sound-tracks $STRAXHQVER

# Because of bit-rot, the build process generates garbage man pages.
# Also, the arch patch we applied changes some of the options, so we
# need a man page that reflects the changes. These man pages came
# from the source tarball, and heroes.6 has been edited as needed.
mkdir -p $PKG/usr/man/man6
install -m0644 -oroot -groot $CWD/man/*.6 $PKG/usr/man/man6
gzip -9 $PKG/usr/man/man6/*

# Picked one of the xpm files to use as an icon.
XPM=$TOPDIR/$PRGNAM-$VERSION/misc/heroes-2.xpm
for px in 16 22 32 48; do
  size=${px}x${px}
  dir=$PKG/usr/share/icons/hicolor/$size/apps
  mkdir -p $dir
  convert -resize $size! $XPM $dir/$PRGNAM.png
done
mkdir -p $PKG/usr/share/pixmaps
install -m0644 -oroot -groot $XPM $PKG/usr/share/pixmaps/$PRGNAM.xpm

# Not going to bother with install-info in the doinst.sh and trying
# to clean up /usr/info/dir after uninstalling the package. Not worth it.
rm -f $PKG/usr/info/dir
gzip -9 $PKG/usr/info/*.info*

cat $CWD/$PRGNAM.SlackBuild > $PKGDOC/$PRGNAM.SlackBuild

mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc
cat $CWD/doinst.sh > $PKG/install/doinst.sh

cd $PKG
/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE
